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请教电路工作原理



各位工程师,请教一下这个电路。该电路是阻抗变换电路。请问运放工作在什么状态?我仿真时,在该电路输出端测不到信号。

C2是让低频信号更加平坦?直流反馈回路是不是经过Q1 Q3 R7 反馈到运放的负输入端?这样会影响射随器的静态工作点吗?

谢谢了